lundgren



F. LUNUGREN.

LUBRICATING AND COOLING DEVICE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED JAN. 20. 1919.

1,312,1 90. Eatented Aug. 1919 mino Lmmtmit, onrnos i a fastened To all whom it may concern: I

Be it known that I, Flinn Lnnnentsi, a cltizen of the United States, residing;. at Los Angeles, in the countyoi Los Angeies and State 01 California, have invented a new and useful Improvement in Lubricating and is covered is opening 22 t, erein, the object of this screen being to exclude dirt and dust from the Cooling Devices for Internal-Combustion Engines, of which the 'o"l;lowing is a specification. j;

My invention relataitEtOqfiternal combustion engines, an'dthe-efbieet oifthe invention is to providers devicei which will-assist in keeping the engine, and more particularly the parts ofthe'enginefsiihjected to luhrh cation, cool under-allconditions of riinning.

A furtheriadvantege of the invention is that the same'jdevicaelubi'itates the valves and pistons of the engine. v

Aastill further advantage of the invention is t at the heat of the engine isntilized to heatthe air of combustionlased in the enmade evident hereinafter.

Referring to the-drawing, which is for illustrative purposes'only, J

Figure 1 is a side vievv- 0t an engine equipped with my invention.

Fig. 2 is a perspective view of my inven tion asattache'd to a carbureter. Fig. 3 is a cross-section taken on a horizontal plane passing approximately throgh the center of the invention.

In the form-'ofmy invention illustrated in these drawings, 11 is an internal conibustion engine which inthis case is of the type used in the Ford and other antomobiles. In this type of engine the valve stems move inside two inclosed spaces commonly termed the valve stem chambers, these spaces bein formed in the side of the automobile an being more or less filled with oil vapor produced hy'the splash lubrication of the engine,v the oil being drained away from the chambers through openings in the-bottom into the. crank case. In the,

later types of engines these'valve stem chambers are closed by suitable covers to prevent oil from escaping therefrom.

in applying my invention to these engines I provide two covers 12 and 13 which are provided with holes let through which bolts are passed bolting the covers to the frame 15 of the engine, this frame being shown in plan view and in section in Fig. 3. The covers .12 and 13 are provided with gasspenttieation; at Letters a flexible pipe 26 with the air intake 2? ,areoerron BEGXIWS.

' Patented Aug, 5,

l Application flied 191s. Eeziat 3.3a, 271333.51.

lrets idea that they arein more or less air tight and-oil tight relationship with the frame 15.

Each of the covers is provided with two openings which maybe conveniently numbered 17, 18, 19 and 20. The opening 20 a cap 21 having 'a screened interior of the engine. The openings 19 and 1 9 are connected by a pipe or channel 25 and the opening 17 is connected through of the carbureter 28 of theengine. The method of operation of the engine is as follows: i

- Whenever the engine is started the air for combustion is taken through the flexible pi e 26 and the opening 17 from valve stem chamber whose front is closed by the cover 12 This air is almost wholly drawn through ne. p l .the pipe 25 *Ezoom the second valve stem Further ob ects and'advantages Will be chamber whose {sent is closed by the'cover 13, this air entering the latter valve stem chamber through the opening 22. There is thus a continuous cigciilation' of air in and around the valve stems and into the carbumtcr 28. This cit'culation of air accomplishes three results. In the first place, it

oil vapor thus carried over are delivered in and around the valves of the engine and into the oylmders thereof, condensing on the walls of the cylinders and being taken up by the pistons in their travel. In the third place, the air in passing through the.valv'e stem chambers comes in' contact with the heated parts of the: engine and with the more or less heated oil of the engine and "itis itself heated before being delivered in the cylinders, thus facilitating combustion.

Various advantages of my invention are 'well summed an in the name which Ihave given to it, namely, Lubriooler. What I claim is':-.-

1. In combination with an internal combustion engine having two valve stem chambers, a cover for each chamber, each of said covers having two openings therein, a filtering medium in one of theopenings of one of said covers, means connecting the other opening of said cover with one opening of the second never, and men-nsoconneeting the other opening of saici second cover with the air intake of the cn-rhn'reter of said engine.

:2. in combination with an internal comhustion engine having two independent chambers formed inside the engine and so pieced to receive oil or oil vapor from the crank case of said engine, a cover for each chamber, each of said covers having two openings therein, a filtering medium in one of the openings of one of said covers, means connecting the other opening of said cover with one opening of the second cover,

and means connecting the other'opening of said second cover with the air intake of the eerbnreter of said engine.

3. In combination with an internal eomhustion engine having two. valve chambers, 11

cover for each chamber, each of said covers havingtwo openings therein, means for con-- necting one opening of one cover with one opening of the second cover, and means connecting the other opening of said second cover with the air intake of the carburet'er of said engine. I

4. In combination With an internal coinbustion engine having two independent chambers formed inside the engine and so placed as to receive oil or-oil vapor from the crank case of said engine, a, cover for each chamber, each of said covers having two openings therein, means forconnecting one opening of one cover-With one opening of the second cover, end-means connecting, the other openin of said second cover with the air intake 0 the carbureter ofsaid enne. In testimon whereof,- I have hereunto set my hand eflios Angeles,gCalifornia, this 11th day of o a nuary, 1919."

FRED LUNDGREN. 

